Alert archive / Illinois / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 56, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 25, 1990, 7:06 PM CDT for Monroe County, Saint Clair County, Illinois. It was in force for 39 min.
The area
The counties it named.
The facts
- Issued
- May 25, 1990, 7:06 PM CDT (00:06 UTC)
- Expired
- May 25, 1990, 7:45 PM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Monroe County, IL, Saint Clair County, IL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 00:00Z, 0.1 hours before the alert went out and 188 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1797 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 771 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 316 m²/s²
- 0-3 km storm-relative helicity
- 509 m²/s²
- Significant tornado parameter
- 3.3
- Supercell composite
- 17.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSTL 260007
SVRSTL
ILC133-163-260045-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
706 PM CDT FRI MAY 25 1990
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 745 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTHWEST ILLINOIS
...NORTHERN MONROE...SOUTHERN ST CLAIR
AT 705 PM...1 INCH HAIL WAS REPORTED IN ARNOLD...IN ST LOUIS COUNTY.JULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
FELDTWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, May 25, 2:01 PM CDT, 5 hours 5 minutes before
MOZ022-023-252100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 200 PM CDT FRI MAY 25 1990 ...THE SEVERE THUNDERSTORM WATCH FOR SOUTHEAST MISSOURI IS CANCELLED... THE THREAT OF SEVERE WEATHER HAS PASSED FOR SOUTHEAST MISSOURI. A SLIGHT RISK OF SEVERE THUNDERSTORMS CONTINUES FOR ALL BUT NORTHERN MISSOURI THIS AFTERNOON AND TONIGHT. EISE
Special weather statement, May 25, 6:27 PM CDT, 39 minutes before
MOZ009-010-014-260030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 625 PM CDT FRI MAY 25 1990 ...STRONG THUNDERSTORMS WERE DEVELOPING OVER WEST CENTRAL MISSOURI... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR CENTRAL AND SOUTHWEST MIISOURI UNTIL MIDNIGHT... AT 625PM THE COLUMBIA WEATHER RADAR INDICATED TWO...STILL DEVELOPING... THUNDERSTORMS JUST NORTHWEST OF THE CITY OF SEDALIA MOVING EAST AT 25 MILES AN HOUR. THESE STORMS WILL PASS JUST NORTH OF SEDALIA WITHIN THE NEXT 30 MINUTES... CARRYING THE POTENTIAL FOR HEAVY RAINS...HAIL...AND STRONG GUSTY WINDS. OTHER...POTENTIALLY SEVERE...STORMS 50 MILES WEST OF SEDALIA WILL BE MOVING INTO SOUTHERN PETTIS COUNTY AFTER 700 PM. PERLOW
Special weather statement, May 25, 6:50 PM CDT, 16 minutes before
MOZ012-260030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 650 PM CDT FRI MAY 25 1990 ...ISOLATED STORMS ARE STARTING TO POP ACROSS ST LOUIS... AT 650 PM...ONE OR TWO THUNDERSTORMS HAD DEVELOPED OVER SOUTH SECTIONS OF THE ST LOUIS AREA. WIDELY SCATTERED STORMS WILL PERSIST IN THE AREA THIS EVENING. MOST AREAS WILL REMAIN DRY HOWEVER A FEW PLACES MIGHT RECEIVE A BRIEF SOAKING. OTHERWISE...SEVERE STORMS HAD DEVELOPED WEST O/F COLUMBIA. THESE STORMS ARE MOVING EAST AND COULD REACH THE ST LOUIS AREA AFTER MIDNIGHT. FELDT
Nearby
Severe Thunderstorm Warnings in Illinois, 1990Every severe thunderstorm warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.